<template>
  <view class="cart">
    <!-- 1 列表 -->
    <view class="cart-list">
      <view
        v-for="(item, index) in list"
        :key="item.goods_id"
        class="cart-item"
      >
        <!-- 1 复选框 -->
        <view class="goods-chk">
          <u-checkbox
            :value="item.checked"
            shape="circle"
            active-color="red"
            @change="handleGoodsToggle(index)"
          ></u-checkbox>
        </view>
        <!-- 2 图片 -->
        <view class="goods-img">
          <u-image
            width="191rpx"
            height="191rpx"
            :src="item.goods_small_logo"
          ></u-image>
        </view>
        <!-- 3 信息 -->
        <view class="goods-info">
          <!-- 名称 -->
          <view class="goods-name u-line-2">{{ item.goods_name }}</view>
          <!-- 价格和数量 -->
          <view class="goods-price-num">
            <view class="goods-price">￥{{ item.goods_price }}</view>
            <view class="goods-num-tool">
              <view class="num-btn" @click="handleNumChange(index, -1)">-</view>
              <view class="goods-num">{{ item.num }}</view>
              <view class="num-btn" @click="handleNumChange(index, 1)">+</view>
            </view>
          </view>
        </view>
      </view>
    </view>
    <!-- 2 统计 -->
    <view class="statistics">
      <view class="all-chk">
        <u-checkbox
          shape="circle"
          active-color="red"
          :value="allCheck"
          @change="toggleAllCheck"
          >全选</u-checkbox
        >
      </view>
      <view class="all-price">
        合计: <text>￥{{ checkedCartPrice }}</text>
      </view>
      <view class="all-count">
        <u-button type="error" shape="circle" @click="handleGoPay"
          >去结算({{ checkedCartNums }})</u-button
        >
      </view>
    </view>
  </view>
</template>

<script>
import { mapState, mapMutations, mapGetters } from "vuex";
export default {
  computed: {
    ...mapState("cart", ["list"]),
    ...mapGetters("cart", ["checkedCartNums", "checkedCartPrice", "allCheck"]),
  },
  methods: {
    ...mapMutations("cart", ["toggleGoodsCheck", "numChange","toggleAllCheck","deleteGoods"]),
    // 商品的选中状态切换
    handleGoodsToggle(index) {
      this.toggleGoodsCheck(index);
    },
    // 商品数量的增减
    async handleNumChange(index, num) {
      // console.log(111);
      // 第一个num是传入的num 也就是+1-1 第二个是购物车里下标为index的商品的数量
      if (num === -1 && this.list[index].num === 1) {
        console.log(111);
        const [err, { confirm }] = await uni.showModal({
          title: "提示",
          content: "确定要删除商品吗",
        });
        // console.log(result);
        if (confirm) {
          this.deleteGoods(index);
        } 
      }else {
          this.numChange({ index, num });
        }
    },
    handleGoPay(){
      if(this.checkedCartNums){
        // console.log('go');
        uni.navigateTo({
        url:'/pages/pay/pay'
      })
      }else{
        uni.showToast({
          title:'您还没选购商品呀',
          icon:'none'
        })
      }
    }
  },
};
</script>

<style lang="scss">
.cart {
  padding-bottom: 111rpx;
  .cart-list {
    .cart-item {
      display: flex;
      padding: 10rpx;
      border-bottom: 1rpx solid #ccc;
      .goods-chk {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .goods-img {
        flex: 2;

        display: flex;
        align-items: center;
        justify-content: center;
      }

      .goods-info {
        color: #666;
        flex: 3;
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        .goods-name {
        }

        .goods-price-num {
          display: flex;
          justify-content: space-between;
          .goods-price {
            color: #eb4450;
          }

          .goods-num-tool {
            width: 140rpx;
            height: 40rpx;

            display: flex;
            justify-content: space-between;
            .num-btn {
              border: 1rpx solid #ccc;
              border-radius: 50%;
              width: 40rpx;
              height: 40rpx;
              text-align: center;
              line-height: 40rpx;
            }
          }
        }
      }
    }
  }
  .statistics {
    position: fixed;
    background-color: #fff;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    border-top: 1rpx solid #ccc;
    display: flex;
    align-items: center;
    padding: 15rpx;
    .all-chk {
    }

    .all-price {
      flex: 1;
      color: #666;
      text {
      }
    }

    .all-count {
    }
  }
}
</style>